Getting Started with Rails on GlassFish (Hands-on Lab) - Spark IT 2010
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This document provides an overview of getting started with Ruby on Rails development on GlassFish. It discusses installing JRuby, Rails, the GlassFish gem, and creating a sample Rails application with CRUD functionality. It also covers deploying Rails applications to GlassFish using directory deployment and WAR deployment, as well as options for monitoring and improving performance of Rails applications on GlassFish.
Getting Started with Rails on GlassFish (Hands-on Lab) - Spark IT 2010
- 1. Getting Started with Rails on GlassFish (Hands-on Lab) Arun Gupta, Java EE & GlassFish Guy, Oracle Corp blogs.sun.com/arungupta, @arungupta
- 2. What this session is not ? • Not a GlassFish tutorial • Not a Rails tutorial • Not a MySQL tutorial
- 3. Software Installed ? • JDK 1.6.0_XX • NetBeans 6.8 (“All” or “Ruby” bundle) • JRuby 1.4.0 • MySQL Community Server 15 minutes
- 4. What is GlassFish ?
- 5. What is GlassFish ?
- 6. GlassFish: It's a Community!
- 7. GlassFish: Lives on java.net Since 2005
- 8. GlassFish: Open Source and Production Quality
- 9. GlassFish: Reference Implementation Java EE 5 Java EE 6
- 10. GlassFish v3
- 14. What is Ruby-on-Rails ? • Full-stack Web development framework in Ruby • Popularly known as Rails • Current Version: Rails 2.3.5 • Rails 3.0 coming
- 15. Ruby-on-Rails MVC Incoming Request Web Server ActionController (Controller) ActiveRecord ActionView xxx_controller.rb (Model) (View) xxx.rb .rhtml .erb Database
- 16. Rails Design Principles • Convention over Configuration (CoC) • Common cases easily served • Encourages standard practices • Everything simpler and smaller • Don't Repeat Yourself (DRY) • Framework written around minimizing repetition • Agile Development • No compile, redeploy, restart cycles • Testing built into the framework
- 17. JRuby • Ruby interpreter written in Java • Current Version: 1.4.0 • 1.5 RC coming soon • Ruby 1.8.7 compatible • Some Ruby 1.9 support • --1.9 flag (80%)
- 18. JRuby • Solid performance ( ͋Ruby 1.9) • Startup is poor, execution usually better than 1.9 • Runs native threads • Foreign Function Interface (FFI)for C libraries • Adopted from Rubinius, CRuby gem • Runs Rails great!
- 19. Install JRuby • CLI: Download & Unzip “jruby- bin-1.4.0.zip” from jruby.org • NetBeans “All” or “Ruby” bundle (pre-installed)
- 20. Install Rails & GlassFish Gem • CLI: “jruby -S gem install rails glassfish” • NetBeans: Tools -> Ruby Gems -> New Gems • Rails pre-installed • Search “glassfish”, Install 5 minutes
- 21. Start Database • Mac/Linux: mysqld_safe --user root • Windows: bin/mysqld-nt --user root • Installed as service ? 2 minutes
- 22. Install Database Adapter “jruby -S gem install activerecord-jdbcmysql-adapter” 2 minutes
- 23. Create a Rails App jruby -S rails helloworld -d mysql cd helloworld jruby script/generate jdbc jruby -S rake db:create 5 minutes
- 24. Run the App cd helloworld jruby -S glassfish 5 minutes
- 27. Add CRUD features jruby script/generate scaffold book title:string author:string 5 minutes
- 28. Model View Controller exists app/models/ exists app/controllers/ exists app/helpers/ create app/views/books exists app/views/layouts/ exists test/functional/ exists test/unit/ create test/unit/helpers/ exists public/stylesheets/ create app/views/books/index.html.erb create app/views/books/show.html.erb create app/views/books/new.html.erb create app/views/books/edit.html.erb create app/views/layouts/books.html.erb create public/stylesheets/scaffold.css create app/controllers/books_controller.rb create test/functional/books_controller_test.rb create app/helpers/books_helper.rb create test/unit/helpers/books_helper_test.rb route map.resources :books dependency model exists app/models/ exists test/unit/ exists test/fixtures/ create app/models/book.rb create test/unit/book_test.rb create test/fixtures/books.yml create db/migrate create db/migrate/20100310221044_create_books.rb
- 29. Generate Database Table jruby -S rake db:migrate == CreateBooks: migrating ============================ -- create_table(:books) -> 0.1690s -> 0 rows == CreateBooks: migrated (0.1710s) ===================== 2 minutes
- 30. Sample Output 5 minutes
- 32. GlassFish Gem: Options jruby -S glassfish -h -c: change the context root -e: environment -d: runs as daemon -P: location of PID file -l: log file location -log-level: Logging level (0-7)
- 34. Why Rails on GlassFish ? - Agile
- 35. Why ? - Easy prototyping, yet powerful
- 36. Why ? - Best of both worlds
- 37. Why ? - Database Connection Pooling
- 38. Why ? - Management
- 39. Why ? - Monitoring
- 40. Directory-based deployment: How ? asadmin start-domain asadmin deploy --property "jruby.home=JRUBY_HOME" helloworld Complete Absolute Path 7 minutes
- 42. Not Just Rails ... http://blogs.sun.com/arungupta/entry/totd_53_scaffold_in_merb http://blogs.sun.com/arungupta/entry/totd_80_sinatra_crud_application
- 45. Rails on GlassFish: WAR Deployment
- 46. WAR Deployment: How ? jruby -S gem install warbler jruby -S warble asadmin deploy xxx.war 7 minutes http://blogs.sun.com/arungupta/entry/totd_73_jruby_and_glassfish
- 47. WAR Deployment: How in NetBeans ?
- 49. Rails on GlassFish: Update Center
- 50. NetBeans: Develop with Pleasure 10 minutes http://blogs.sun.com/arungupta/entry/screencast_26_develop_run_debug
- 51. Rails Monitoring • Basic Monitoring • jinfo: System properties and VM CLI flags • jmap: Shared object memory map • jstack: Stack traces of Java threads • jstat: Performance statistics on class, JIT compiler, GC, ... • Advanced • jconsole / Visual VM • NewRelic, FiveRuns, ...
- 52. jConsole http://blogs.sun.com/arungupta/tags/rubyonrails+jmx
- 55. Turbo charging your JRuby Startup • “-client” or “-server” ? (Upto 50%) • Faster startup or solid runtime ? • export JAVA_OPTS=”-client -D32” • Upto 50% improvement • For Linux: Class Data Sharing • Delay or disable JRuby's JIT (Upto 10%) • -X-C • jruby.compile.mode=OFF • Avoid spawning “sub-Rubies” • Nailgun for small JRuby CLI invocations • Favorite JVM Flags
- 56. Who loves Rails on GlassFish ?
- 57. Resources • glassfish.org • blogs.sun.com/theaquarium • glassfish-scripting.dev.java.net • wiki.glassfish.java.net/Wiki.jsp? page=JRuby • blogs.sun.com/arungupta